
Recent discoveries in microbial digestion of plastic have finally left the lab and entered the real world in the form of HIRO diapers, the world’s first diaper manufactured to be eaten by fungi.
Every year, over 18 billion diapers are discarded into US landfills—and if they aren’t manufactured with natural cellulose, then they’re going to be there for 500 years, leaking microplastics and chemicals into the soil.
With that unfortunate truth out of the way, dig this dirty great news: a pair of serial entrepreneurs have developed diapers designed to be broken down into soil by fungi, and they’re practically flying off the shelves.
Each HIRO MycoDigestible Diaper comes with a small packet of shelf-stable, plastic-eating fungi. Parents simply throw the packet away with the used diaper—no extra steps required.
Once the diaper reaches a landfill, the fungi activate in the presence of moisture and begin to break down the diaper’s materials from the inside out. These fungi secrete enzymes that target and sever the carbon bonds in plastic, transforming the waste into mycelium and nutrient-rich soil over time.
“The response has been nothing short of electric. People are hungry for real solutions, and this one hits home—both literally and globally,” said Tero Isokauppila, co-founder of HIRO Technologies and pioneer in the now-$2.7 billion global mushroom coffee industry.
“If we can break down a diaper, we can break down anything. Once we’ve gained enough market share, we can partner with other brands and bring this technology to the world.”
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Unlike traditional end-of-life methods that require high energy inputs or create harmful emissions, HIRO’s fungi-powered solution is scalable, sustainable, and truly circular.
While plastic-eating fungi were first discovered by scientists over a decade ago, their potential has remained locked in labs—until now. HIRO has pioneered a commercial, shelf-stable fungi technology that targets plastic at a molecular level, breaking it down into soil and mycelium, the root system of fungi.
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“It’s literally in mushrooms’ DNA to break down complex carbon materials,” explains Isokauppila, saying that when they first evolved on Earth, they broke down rocks long before ever bothering a tree. “They already break down lignin which has a similar carbon backbone to plastics. We’ve simply re-trained them to do what they already kind of knew how to do.”
At the moment the diapers are available on a subscription basis that includes a week’s supply, plus wet wipes and the fungal spore packets for $35 per week.
WATCH an explainer video…
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